Rhubarb juice for jelly - why is it cloudy?

It has had ample time to settle; has been through the jelly bag strainer, and remains stubbornly cloudy. I've successfully made the -- unbelievably beautiful and clear -- jelly many times in the past, but am frustrated by the cloudy this time (and, truth be told, the last). Is it the mix of rhubarb I'm using (new sources)? What are the likely culprits?

This is so frustrating! It is still that beautiful pink, but it isn't the lovely, lovely clear that I'm used to. I'm really wondering if it wasn't a different variety of rhubarb that caused the problem? I'll still make it into jelly, but it won't be "clear skies" but rather "misty morn" jelly....